I'm taking the git man page as an example, but I have seen the example I am about to use many places throughout UNIX/Linux.
Under the git man page, it has the following header:
Main Porcelain Commands
Underneath this header, there are a lot of commands with dashes between such as:
git-clone
Since that is headed under Commands you would assume that it means git-clone is a command (I very well know git clone [directory] is a valid.
But it appears that it isn't - so why does the man page list git-clone as being a command? The man pages are good, if you can decode them right.